Riello NXHM - Page 23

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9.3.1 Main control board of hydraulic module
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2014 15 17 1916 21
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CN4
CN22
CN5
S3
DIS1
CN24
CN1
CN2
CN6
CN8
CN13
CN15
CN16
CN18
CN28
S2
CN42
CN21
S1
S4
CN11 CN7
CN17
CN14
CN19
CN30
CN35
CN31
CN36
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CN25
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CN29
CN40
CN41
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SW9
Order Port Code Assembly unit
1 CN21 Power Port for power supply
2S3  Rotary dip switch
3DIS1  Digital display
4 CN5 GND Port for ground
5 CN28 PUMP Port for variable speed pump power input
6 CN25 DEBUG Port for IC programming
7 S1,S2,S4,SW9  Dip switch
8 CN4 USB Port for USB programming
9 CN8 FS 3RUWIRUÀRZVZLWFK
10 CN6
T2 Port for temperature sensors of refrigerant liquid side temperature of indoor unit (heating mode)
T2B Port for temperature sensors of refrigerant gas side temperature of indoor unit (cooling mode)
TW_in Port for temperature sensors of inlet water temperature of plate heat exchanger
TW_out Port fot temperature sensors of outlet water temperature of plate heat exchanger
T1 3RUWIRUWHPSHUDWXUHVHQVRUVRI¿QDORXWOHWZDWHUWHPSHUDWXUHRILQGRRUXQLW
11 CN24 TBT1 Port for upper temperature sensor of balance tank
12 CN16 TBT2 Port for lower temperature sensor of balance tank
13 CN13 T5 Port for domestic hot water tank temp. sensor
14 CN15 TW2 Port for outlet water for zone 2 temp. sensor
15 CN18 Tsolar Port for solar panel temp sensor
16 CN17 PUMP_BP Port for variable speed pump communication
17 CN31
HT Control port for room thermostat (heating mode)
COM Power port for room thermostat
CL Control port for room thermostat (cooling mode)
18 CN35
SG Port for smart grid (grid signal)
EVU Port for smart grid (photovoltaic signal)
19 CN36
M1 M2 Port for remote switch
T1 T2 Port for thermostat transfer board
20 CN19 P Q Communicate port between indoor unit and outdoor unit
21 CN14 A B X Y E Port for communication with the wired controller